The number of neutrons present in a nitrogen atom is ___.
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What is C12H22O11 also known as
Acid rain is caused by release of ___ and___ into the air.
NaCl is a salt which is made up of
Which of the following metals does NOT react with cold or hot water?
Which of the following causes damage to bridges, iron railings and all objects made of metals?
Non-metallic character increases from ____.
In the Modern Periodic Table elements present in the same period will have the same